Explain the name Publius.

Latin or a personal name. It was used by both patrician and plebeian families, and was very common at all periods of Roman history.

Publius Valerius Poplicola or Publicola (d. 503 BC) was one of four Roman aristocrats who led the overthrow of the monarchy and became a Roman consul, the colleague of Lucius Junius Brutus in 509 BC, traditionally considered the first year of the Roman Republic.